Understanding the Universe: An Introduction to Astronomy, 2nd Edition is a nontechnical description of where that picture stands today. In 96 richly illustrated half-hour lectures, you will survey the main concepts, methods, and discoveries in astronomy in-depth from the constellations drawn by the ancients, to the latest reports from planetary probes in the Solar System, to the most recent images offered by telescopes probing the farthest frontiers of space and time.